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3. CHANGING SETTINGS
3-15
3.9.3 Display menu
Click Display on the external echo sounder window’s menu bar.
ETR setting window
Display mode: Choose display mode among High frequency-single, Low frequency-single,
Dual frequency, High frequency-zoom and Low frequency-zoom.
Zoom mode: Choose the zoom mode among Bottom lock, Bottom zoom and Marker zoom.
The display mode must be high frequency zoom or low frequency zoom, otherwise this
feature is inoperative.
Screen layout: Show the external echo sounder image in horizontal or vertical split. The
low frequency-zoom, high frequency-zoom display or dual frequency display must be active,
otherwise this feature is inoperative.
A-scope: Turn the A-scope display on or off.